diff --git a/laws-module-system/src/main/java/com/jero/modules/system/service/impl/LoginServiceImpl.java b/laws-module-system/src/main/java/com/jero/modules/system/service/impl/LoginServiceImpl.java
index 2bb81ef1..9fe6ae5c 100644
--- a/laws-module-system/src/main/java/com/jero/modules/system/service/impl/LoginServiceImpl.java
+++ b/laws-module-system/src/main/java/com/jero/modules/system/service/impl/LoginServiceImpl.java
@@ -100,7 +100,7 @@ public class LoginServiceImpl implements ILoginService {
         }
 
         String captcha = sysLoginModel.getCaptcha();
-        if(captcha==null){
+        if(StringUtils.isBlank(captcha)){
             return Result.error("验证码无效");
         }
         String lowerCaseCaptcha = captcha.toLowerCase();